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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Consultant	Paul Henriot	Italy	1 2 3 4 5
2	Accountant	Elizabeth Lincoln	France	1 2 3 4 5
3	Sales Associate	Paul Henriot	Bulgaria	1 2 3 4 5
4	Sales Representative	Paul Henriot	Spain	1 2 3 4 5
5	Sales Representative	Howard Snyder	France	1 2 3 4 5
6	Marketing Assistant	Hanna Moos	Argentina	1 2 3 4 5
7	Sales Representative	Pascale Cartrain	Austria	1 2 3 4 5
8	Marketing Manager	Antonio Moreno	France	1 2 3 4 5
9	Accounting Manager	Elizabeth Lincoln	France	1 2 3 4 5
10	Sales Consultant	Hanna Moos	France	1 2 3 4 5
11	Sales Agent	Patricio Simpson	Brazil	1 2 3 4 5
12	Accounting Manager	Antonio Moreno	USA	1 2 3 4 5
13	Sales Consultant	Elizabeth Lincoln	England	1 2 3 4 5
14	Accounting Manager	Paul Henriot	Germany	1 2 3 4 5
15	Owner	Hanna Moos	Germany	1 2 3 4 5
16	Sales Consultant	Elizabeth Lincoln	Brazil	1 2 3 4 5
17	Sales Manager	Patricio Simpson	Italy	1 2 3 4 5
18	Owner	Matti Karttunen	Argentina	1 2 3 4 5
19	Sales Manager	Howard Snyder	Bulgaria	1 2 3 4 5
20	Owner	Georg Pipps	Austria	1 2 3 4 5
21	Accounting Manager	Antonio Moreno	Italy	1 2 3 4 5
22	Owner	Patricio Simpson	Argentina	1 2 3 4 5
23	Sales Manager	Hanna Moos	Argentina	1 2 3 4 5
24	Accountant	Hanna Moos	USA	1 2 3 4 5
25	Accountant	Paul Henriot	England	1 2 3 4 5
26	Sales Manager	Howard Snyder	Argentina	1 2 3 4 5
27	Marketing Manager	Elizabeth Lincoln	USA	1 2 3 4 5
28	Accounting Manager	Antonio Moreno	Brazil	1 2 3 4 5
29	Marketing Manager	Pascale Cartrain	France	1 2 3 4 5
30	Marketing Manager	Pascale Cartrain	USA	1 2 3 4 5
31	Marketing Assistant	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
32	Owner	Matti Karttunen	Argentina	1 2 3 4 5
33	Sales Consultant	Elizabeth Lincoln	Argentina	1 2 3 4 5
34	Sales Consultant	Howard Snyder	Bulgaria	1 2 3 4 5
35	Marketing Assistant	Matti Karttunen	USA	1 2 3 4 5
36	Accounting Manager	Pascale Cartrain	France	1 2 3 4 5
37	Sales Associate	Pascale Cartrain	Germany	1 2 3 4 5
38	Sales Consultant	Hanna Moos	Italy	1 2 3 4 5
39	Accounting Manager	Antonio Moreno	Argentina	1 2 3 4 5
40	Sales Manager	Hanna Moos	Bulgaria	1 2 3 4 5
41	Marketing Assistant	Hanna Moos	France	1 2 3 4 5
42	Sales Agent	Pascale Cartrain	Italy	1 2 3 4 5
43	Marketing Assistant	Pascale Cartrain	England	1 2 3 4 5
44	Marketing Manager	Hanna Moos	England	1 2 3 4 5
45	Sales Agent	Howard Snyder	Italy	1 2 3 4 5
46	Owner	Elizabeth Lincoln	Argentina	1 2 3 4 5
47	Owner	Jaime Yorres	France	1 2 3 4 5
48	Accounting Manager	Georg Pipps	USA	1 2 3 4 5
49	Accountant	Matti Karttunen	Italy	1 2 3 4 5
50	Owner	Elizabeth Lincoln	Argentina	1 2 3 4 5
51	Sales Consultant	Hanna Moos	England	1 2 3 4 5
52	Sales Consultant	Jaime Yorres	USA	1 2 3 4 5
53	Owner	Patricio Simpson	Brazil	1 2 3 4 5
54	Sales Manager	Paul Henriot	Spain	1 2 3 4 5
55	Sales Associate	Elizabeth Lincoln	Argentina	1 2 3 4 5
56	Owner	Jaime Yorres	Bulgaria	1 2 3 4 5
57	Sales Representative	Jaime Yorres	England	1 2 3 4 5
58	Marketing Manager	Paul Henriot	Brazil	1 2 3 4 5
59	Sales Representative	Georg Pipps	Italy	1 2 3 4 5
60	Sales Associate	Patricio Simpson	Argentina	1 2 3 4 5
61	Sales Manager	Matti Karttunen	England	1 2 3 4 5
62	Sales Manager	Paul Henriot	USA	1 2 3 4 5
63	Accounting Manager	Elizabeth Lincoln	England	1 2 3 4 5
64	Marketing Assistant	Matti Karttunen	Bulgaria	1 2 3 4 5
65	Sales Manager	Hanna Moos	Germany	1 2 3 4 5
66	Sales Consultant	Georg Pipps	England	1 2 3 4 5
67	Owner	Georg Pipps	Austria	1 2 3 4 5
68	Sales Associate	Georg Pipps	Brazil	1 2 3 4 5
69	Sales Associate	Elizabeth Lincoln	USA	1 2 3 4 5
70	Accounting Manager	Matti Karttunen	Italy	1 2 3 4 5
71	Accounting Manager	Matti Karttunen	France	1 2 3 4 5
72	Sales Manager	Paul Henriot	Brazil	1 2 3 4 5
73	Accountant	Georg Pipps	Italy	1 2 3 4 5
74	Sales Manager	Pascale Cartrain	Italy	1 2 3 4 5
75	Sales Representative	Georg Pipps	Spain	1 2 3 4 5
76	Sales Associate	Howard Snyder	Brazil	1 2 3 4 5
77	Accounting Manager	Pascale Cartrain	Argentina	1 2 3 4 5
78	Owner	Patricio Simpson	Brazil	1 2 3 4 5
79	Sales Consultant	Patricio Simpson	France	1 2 3 4 5
80	Accountant	Patricio Simpson	Argentina	1 2 3 4 5
81	Sales Representative	Hanna Moos	France	1 2 3 4 5
82	Sales Consultant	Paul Henriot	Brazil	1 2 3 4 5
83	Accounting Manager	Jaime Yorres	France	1 2 3 4 5
84	Marketing Assistant	Paul Henriot	Bulgaria	1 2 3 4 5
85	Sales Associate	Antonio Moreno	Argentina	1 2 3 4 5
86	Sales Manager	Patricio Simpson	Brazil	1 2 3 4 5
87	Owner	Jaime Yorres	USA	1 2 3 4 5
88	Sales Agent	Antonio Moreno	England	1 2 3 4 5
89	Sales Consultant	Patricio Simpson	USA	1 2 3 4 5
90	Marketing Manager	Hanna Moos	France	1 2 3 4 5
91	Sales Manager	Georg Pipps	Austria	1 2 3 4 5
92	Sales Associate	Matti Karttunen	Bulgaria	1 2 3 4 5
93	Sales Associate	Jaime Yorres	Germany	1 2 3 4 5
94	Sales Consultant	Howard Snyder	Germany	1 2 3 4 5
95	Sales Representative	Howard Snyder	Spain	1 2 3 4 5
96	Accounting Manager	Hanna Moos	Spain	1 2 3 4 5
97	Sales Representative	Antonio Moreno	Spain	1 2 3 4 5
98	Sales Representative	Matti Karttunen	Bulgaria	1 2 3 4 5
99	Sales Consultant	Georg Pipps	Italy	1 2 3 4 5
100	Sales Representative	Patricio Simpson	Bulgaria	1 2 3 4 5


...241 242 243 244 245 246 247 248 249 250 ... Item 247001 to 248000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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